golib/crypto/gsha1/sha1.go

//
// sha1.go
// Copyright (C) 2022 tiglog <me@tiglog.com>
//
// Distributed under terms of the MIT license.
//

package gsha1

import (
	"crypto/hmac"
	"crypto/sha1"
	"encoding/hex"
	"io"
	"os"
)

// Encrypt encrypts any type of variable using SHA1 algorithms.
// It uses package gconv to convert `v` to its bytes type.
func Encrypt(in string) string {
	r := sha1.Sum([]byte(in))
	return hex.EncodeToString(r[:])
}

// EncryptFile encrypts file content of `path` using SHA1 algorithms.
func EncryptFile(path string) (encrypt string, err error) {
	f, err := os.Open(path)
	if err != nil {
		return "", err
	}
	defer f.Close()
	h := sha1.New()
	_, err = io.Copy(h, f)
	if err != nil {
		return "", err
	}
	return hex.EncodeToString(h.Sum(nil)), nil
}

// MustEncryptFile encrypts file content of `path` using SHA1 algorithms.
// It panics if any error occurs.
func MustEncryptFile(path string) string {
	result, err := EncryptFile(path)
	if err != nil {
		panic(err)
	}
	return result
}

// hmac sha1
func HmacSha1(in, key []byte) []byte {
	h := hmac.New(sha1.New, key)
	h.Write(in)
	return h.Sum(nil)
}